NAVIGATION SYSTEM Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

DESCRIPTION

• The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the radio and display receiver assembly via this circuit.

  If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the radio and display receiver assembly, extension module or speakers.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY)

   
   

   1. Disconnect the radio and display receiver assembly connector.

   2. Disconnect the No. 1 stereo jack adapter assembly connector.

   3. 

      Text in Illustration

      *a	Front view of wire harness connector (to Radio and Display Receiver Assembly)
      *b	Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition E128-25 (ADPG) - E131-9 (AUXO) Always Below 1 Ω E128-11 (AGND) - E131-10 (AGND) Always Below 1 Ω E128-26 (VAR+) - E131-6 (ARO) Always Below 1 Ω E128-28 (VAL+) - E131-7 (ALO) Always Below 1 Ω E128-27 (VA-) - E131-8 (ASGN) Always Below 1 Ω E128-25 (ADPG) - Body ground Always 10 kΩ or higher E128-11 (AGND) - Body ground Always 10 kΩ or higher E128-26 (VAR+) - Body ground Always 10 kΩ or higher E128-28 (VAL+) - Body ground Always 10 kΩ or higher E128-27 (VA-) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here